Features:Full charge mode and storage charge mode1, Storage and charging mode: The battery is stored for a long time with 40%-60% of the battery capacity. The battery is easily swollen when stored at full power, and storage without power may lead to battery failure.2, The storage mode is to charge the battery with a battery power of less 2 level to (about 60% of the power) for long-term storage.Specifications:Input voltage: AC 110-240VBattery port output: 17.6V/2.0A(MAX)*4USB port output: 5V/3ACharging time: about 150 minutes when fully charged with 4 batteriesCharging temperature: 7-40 degrees CelsiusSuitable For DJI Mavic 3 DronePackage includes:1 x Fast Charger Hub4 x Battery Cable1 x Power Cable